Creating a Service Provider For Our Custom Laravel Hashing Implementations

By John Koster November 30, 2016

In this article, we will create a service provider for all all of the custom hashing implementations that we created in previous articles. The articles about the hashing implementations can be found at these locations:

To register all the Illuminate\Contracts\Hashing\Hasher implementations with the application service container, we will create a new service provider named HashServiceProvider in the app/Providers/ directory. The path (relative to the project directory) would then be app/Providers/HashServiceProvider.php. The service provider itself will be fairly simple, just registering the implementations with a given name as singletons (some lines have been intentionally wrapped to improve readability):

 1<?php
 2
 3namespace App\Providers;
 4
 5use Illuminate\Support\ServiceProvider;
 6use Laravel\Artisan\Hashing\ExtendedDesHasher;
 7use Laravel\Artisan\Hashing\StandardDesHasher;
 8use Laravel\Artisan\Hashing\Md5Hasher;
 9use Laravel\Artisan\Hashing\Sha256Hasher;
10use Laravel\Artisan\Hashing\Sha512Hasher;
11
12class HashServiceProvider extends ServiceProvider
13{
14    /**
15     * Indicates if loading of the provider is deferred.
16     *
17     * @var bool
18     */
19    protected $defer = true;
20    /**
21     * Register the service provider.
22     *
23     * @return void
24     */
25    public function register()
26    {
27        $this->app->singleton('hash.extDes', 
28            function () { return new ExtendedDesHasher; });
29
30        $this->app->singleton('hash.des', 
31            function () { return new StandardDesHasher; });
32
33        $this->app->singleton('hash.md5', 
34            function () { return new Md5Hasher; });
35
36        $this->app->singleton('hash.sha256', 
37            function () { return new Sha256Hasher; });
38
39        $this->app->singleton('hash.sha512', 
40            function () { return new Sha512Hasher; });
41    }
42    /**
43     * Get the services provided by the provider.
44     *
45     * @return array
46     */
47    public function provides()
48    {
49        return [
50            'hash.extDes', 'hash.des', 'hash.md5'.
51            'hash.sha256', 'hash.sha512'
52        ];
53    }
54}

Each implementation has been bound according to the format hash.<hashName>. This will be useful for our next step: creating a convenient hashing manager.

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